Criterion for Bose-Einstein condensation in a harmonic trap in the case with attractive interactions

被引：33
|
作者：
Gajda, M [1 ]
机构：
[1] Polish Acad Sci, Inst Fizyki, PL-02668 Warsaw, Poland
来源：
PHYSICAL REVIEW A | 2006年 / 73卷 / 02期
关键词：
D O I：
10.1103/PhysRevA.73.023603
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Using a model many-body wave function I analyze the standard criterion for Bose-Einstein condensation and its relation to coherence properties of the system. I pay special attention to an attractive condensate under such a condition that a characteristic length scale of the spatial extension of its center of mass differs significantly from length scales of relative coordinates. I show that although no interference fringes are produced in the two-slit Young interference experiment performed on this system, fringes of a high visibility can be observed in a conditional simultaneous detection of two particles.
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页数：5
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